The movie itself is mildly OK. However, this movie shows why MM has been so unforgettable to the American public almost 40 years after her death.
Check out two scenes. First, the justifiably famous rendition of "That Old Black Magic" number. Whether acting or if it's the real Marilyn Monroe, she conveys loneliness in front of a packed saloon; the feeling of recognition and appreciation when the Don Murray (Bo)character berates the patrons to show respect to her while she sings; and the out-and-out sexiness of her when she is lit up in red flames. Wow!!
The second scene is near the end when, standing out in the cold, Bo offers her his coat. The look on her face when she realizes that someone, maybe for the first time, is there to look after her and take care of her is absolutely moving. Again we can see the real Marilyn in the character. She so desperately looked for love and acceptance all through her life.
This is not a great movie. It is a great showcase for one of the most
remarkable personalities in movie history.